Coffee-making apparatus



April 10, 1928.

'B. w. CANRIGHT COFFEE MAKING APPARATUS Filed Dec. 19. 1927 5Signs-Sheet 1 fm enfor Bm/CEWCANEIGHT JAJMW April 10, 1928.

B. W. CAN RIGHT COFFEE MAKING APPARATUS Filed Dec. 19. 1927 Lsesazs v 5Sheets-Sheet 2 DEUCEWCWE/G/ T M m W 4 April 10, 1928.

B. W. CANRIGHT COFFEE MAKING APPARATUS 5 Sheets-Sheet 3 Filed Dec. 19,192'? 7 0 T m m m m m M lbw U a E M 9 8 6N I 4 m m a M 1/ 6 a E s Q s wz .5 F m7 Q a 3 m z w P w /4TTORNEYJ B. W. CANRIGHT COFFEE MAKINGAPPARATUS A ril 10,192 1,665,728

Filed Dec. 19. 1927 I 5 Sheets-Sheet 5 B/eucEWOWR/GHT Patented Apr. 10,1928.

UNITED" STATES PATENTTOFFICEQ Bacon w. CANRIGHT, or ST. PAUL, MINNESOTA,Assmnon or ONE-HALF TO IRA E.

MEAGHER, or mmmaroms, MrnNEso'rA.

COFFEE-MAKING APPARATUS.

Application filed December 19, 1927. Serial No. 241,124.

This invention app aratus.

One of themain objects isto eliminate the use of screens or strainers,and; therefore, to produce a device which does not operate on thepercolation principle. The use of strainers whether the coffee iscoarsely orfinely ground results. in clogging of the screens.lifloreover, by percolation certain undesirable substances of the coffeebean go into solution. The present machine substantially eliminates theuse of strainers except for draining purposes, to permit a draining ofthe potable portion of the coffee from the grounds before dumping thegrounds.

Other objectsof the invention are to provide a machine which issubstantially noiseless in operation and in which no pumps are used; toprovidea device wherein no steam can reach the dry coffee supply tomoisten it and cause that clogging which interferes with its flow; toprovide a general simplification of'mechanism wherein the operations areobtained, for example by a single element as gear and cam; to provide acoffee supply hopper mounted upon a removable mechanism cover, and toremovably mount the hopper in such cover;"to arrange the hopper so thatwhen it is removed access can be had to the mechanism for oiling oradjusting without removal of the cover; to provide a constructionwhereby the coffee making portion of the mechanism.can be relates tocoffee making removed as a unit; to provide mechanism operable by afloat'in the coffee dispensing chamber, to stop operation of the machinewhen the chamber is full, and to provide means whereby the coffeechamber is removable and whereby the float can be ad justed andheld in aposition to permit removal of the made coffee storage or dispensingtank; to provide an agitator or mixer in the steeping chamber operableby the same mechanism which controls coffee making; and to provide anagitator in the receiving chamber for the dry coffee, to preventclogging and to operate this agitator by a portion of the same mechanismwhich performs the coffee making operation. 1

Features oftheinvention include the simple arrangement of the parts; thesimple construction of the parts per se; the use of only two chambers,respectively for extracting the coffee essencaand for draining afterextraction; the construction allowing removal ofthese two chambers as aunit,'includlng a portion of the operating mechanism; the arrangementfor causing automatic closing of the bottom of the drain mitting removalof the coffee dispensing receptacle, as well as themeans for preventingaccidental removal; the arrangement of the float and device forpermitting its removal so that the receptacle can be removed;

the arrangement of the dry coffee supply hopper, removably in a casingwhich-acts as a cover for the synchronizing mechanism; and generally toall details of arrangement and construction of the parts.

Advantages of the invention will beset forth in the description of thedrawings forming a part of this said drawings v Figure l is a verticalsection with the elements in draining position;

Figure 2 is a section on line 22 of Figure 1 looking in direction of thearrow;

Figure 3 is a fragmentary view of the coffee making portion of theapparatus illustrating the position of the parts during the extractionperiod;

Figure 4 is a section on line 4-4 of Fig ure 1'; p

Figure 5 is a plan section on line 5'5 of Figure 1;

Figure 6 is a plan section 011 line 66 of Figure 1 looking upwardlyFigure? is a plan section on line 7-7;

Figure 8 is a plan section on line'S-S;

application, and in I Figure 9 is a top plan view showing thesynchronizing and driving-mechanism and electrical control therefor;

Figure 10 1s a vertical section on line 101() of Figure 9 illustratingthe trip for operating the water valve;

Figure 11 is a reverse plan view of the timing cam; 4

Figure 12 is a detail view illustrating the mounting and operation ofone of the mercury switches;

Figure lZ-B is a detail view illustrating the location of the doorgiving access for removal. of the drain receptacle screens; and

Figure 14 is a fragmentary view illustrating a modified form ofv valveand valveoperating mechanism for the extraction chamber.

A suitable casing and support for the device is generally indicated at1, and the casing is suitably supported on legs 2, preferably with itsbottom spaced from the floor to permit arrangement of a warming burnerbeneath a coll'ee dispensing compartment. The casing is dividedvertically to provide, in this instance, at one side, a chamberwithinwhich is removably contained certain portion's ofthe coffeehandling or making mechanism, including extraction, draining and dumpingelements. The general contour of thischan iber is best shown by dottedlines in igure 9 and comprises rear and side walls 7 and 8'. Thechan'iber closed at the front by adoor 10, the hinges or securingdeviceof which are not shown.

Means are provided fordelivering and heating water, and for this purposethe rear portion of the casing is horizontally partitioned by shelves,respectively as at 1112, see Figure 1, to enclose the va'ter heater andseparate it from the movable portions of the mechanism; The partition 11has an enlarged opening 13 to permit the application of heat to thebottom of a water receptacle 14; The receptacle is provided with afillingopening 15 closed by a suitable screw capl'f. Access can be hadto fill the water receptacle by removal of a lid and shelf held-onsuitable brackets adjacent the top of the casing 1. This plate alsosupports certain portions of the timing mechanism as will appearhereafter. A suitable water supply pipe 21 communicates with the watersupply chamber and its lower portion, and apressure relief valve 22- isprovided and communicates with the chamber in its upper portion, The gasline is generally indicated at 25 and has therein a valve 26 operated bya thermostat 27, which thermostat is arranged substantially as shown tobe in the body of the liquid. The construction of this device forms nopart of the present invention and, therefore, is not shown indetail.Connected with and controlled by the valve is a gas supply pipe 28connected with a burner 29. The pipe 28 passes through the partition 12and supports the burner between the partitions 11 and 12. A branchgaspipe 30" connects the pipe 25 with the warming burner 5. A delivery pipe32' connects the top of the tank and projects into the chamber formed bythe elements 7 and 8, a-nd'atthe upperpart of this chamber. Avalvecasing, see Figure l, connects with this pipe 32 and has a suitablevalve 38. In this instance, the valve isof the gate type and is operatedby an arm 34 connected by a link 35 with a lever 36, see Figures 9, and10, mounted ata level above the cover 20, by pivoting as at 37 to aplate 38 which plate also assists in supportingcertain portions of thedriving and synchronizing mechanism. The plate 38 is supported at thetop of a stud 10 which forms a journal for timing cam gear later to bedescribed. A. coil spring 4-1 surroundingthe link 35 tends to throw thelink in a direction to close the valve. Ext-ending from the oppositeside of the valve, see Fig ure 6', is a p'ij'ie connected with amanifold 4-2 having extending therefron'i a series of pipes 43 eachprovided with a series of nipples; 44'. These nipples are arranged tojet water. downwardly into the extraction chamber, later to bedescribed, A pipe 47, see Figuresl and at, as'a branch of the pipe 45,hot water through nozzles l8 against a drain screen, in a manner to bedescribed. It will beunderstood that the hot water is periodicallydelivered to dry ground coffee to extract certain constituents of thecoffee for the purpose set forth, the operation being one of solution,rather than of percolation.

The top of the casingl, see Figure 1, is providedwith a separable cap orcasing 50, having inits top an opening 51, projecting downwardlythroughwhich and into the cap is a dry coffee hopper 52. This hopper isprovided with a suitable filling door 53, and its lower end isconstricted as zit-54 to deliverdownwardly into a second hopper 56 whichdelivers into a measuring chamber A hand operable slide as a valve 60,is interposed between the bottom of the hopper 52 and the measuringchamber 57 so that flow from the hopper may be controlled in this way,as well as automatically, as will appear below. As best shown in Figure2, the chamber walls are extensions ofthe walls of the hopper 56, andthe walls are formed to provide two pairs ofj guide-ways respectivelyindicated at In the guides are slides respectively indicated at 6-t65,see also Figure 1. The slides constitute valves,.and it will beunderstood that any suitable form of va'lvemay be used. The valve formsa bottom for the measuring chamber, and acts to release the measuredcharge, while the valve 6d functions to cut off the supply of cofleeafter the chamber is filled. Therefore the slide 65 is always closedbefore slide 64- is open, and slide 64 is, always closed before slide 65is opened.

A suitable agitator shaft 66 traverses the chamber 57, and isautomatically operable in a manner later to be described. The measuringchamberis" arranged ata level above the water delivery pipes, 43,44:,and is so arranged that it drops its cl1arge,,see Figure 6, betweenthe innermost series of pipes, which are spaced apart to permit thisoperation.

An important featureof the invention is theprovision of means forreceivmg ground coifee, introducing hot water into a recepta til) herdirectly downwardly thereinto.

cle containing the ground coffee, allowing disposed shaft,.the shaftbeing supported in the water and coffee-to remain in contact for apredetermined time, then releasing the coffee, receiving the releasedcoffee in a drain receptacle, holding the coffee in the drain receptaclewhile the liquid portion is drained off, and then emptying the groundsafter this draining operation. Another feature is the arrangement of aportion of this mechanism so that it can be removed for cleaning.Another feature includes the mounting of the parts, and of a certainportion of the mechanism for operating the same so that this much of theapparatus can also be removed. For these purposes, a eas ing, seeFigures 1, 2, 7 and 8, is provided which comprises a front wall 67 andside walls 68, the side wallsbeing connected at the rear, and at top andbottom by cross strips 70. This casing is open at the top and bottom andrests at its lower end by gravity upon an extension 71, see Figure 1,which is provided with an indented portion 7 2 to prevent suchhorizontal sliding movement as would release it. The side walls 68 haveout-turned portions 7 3, see

Figure 7, and the elements 70 extend beyond the side 68 and engage withand are fastened to these extensions 73. The extensions 7 3 secured asat? 6 to the wall 7. In introducing the casing, its upper rear portionis first brought to a position just beneath the hooklike elements 7 5and then the 'casingis raised to engage elements 7 3 with elements 7 5,.thereafter the lower portion of the casingis swung inwardly to engagethe element 70 with the element 72 as best shown in Figure 1. TV hen thecasing is thus placed its outer wall 67 is ordinarly spaced from thedoor 10 as shown. A partition 77 divides this removable casingvertically to provide an elongated compartment, the upper portion ofwhich constitutes an extraction chamber 78. A slide 80 is arranged asa'valve to divide the compartment horizontally and form a bottom for theextraction chamber, and the slide can be moved to form the bottom asshown in Figure 3, or can be withdrawn to release a charge as shown inFigure .1. Any form of valve may be used for this purpose. For example,the form shown in the moditication of Figure 14.

Within this extraction chamber a charge of the ground coffee isdelivered, and then water is delivered upon the coffee, and all ishelduntil a predetermined amountof solution. has taken place, to extractor dissolve a certain portion of the desired soluble constituents of theground coffee. The extraction chamber is arranged vertically beneath themeasuring chamber 57 so that the charge may be dropped from themeasuring chaml A horizontal agltator 81 1s arranged on a verticallypositions.

any desired manner, and beingconnected by gear 82 with a horizontalshaft 83, see Fig? ure 2. This shaft, 83 extends outwardly through oneof the vertical walls (58 andis provided with av hollow cone portion 85.Another cone portion 86 is slidably and rotatably mounted on; the shaft87, and is pro chamber is disposed a drain receptacle 92.

This receptacle is arranged to receive the charge delivered from theextraction chamber, and has 'a pivoted bottom 93 having a portionperforated as at 94. This perforated bottom may have the form of ascreen and preferably has such a form, and the screenport-ion isreinovably arranged. As shown, the screen portion 94: can be removed inalateral direction. The major portion of the outer side of thisreceptacle isialso pro vided with a removable screen 95 and this screenhas the form ofa slide detachable by withdrawal laterally, as best shownin Figure2. The screen is held against accidental displacement by asuitable device indicated at 96. Access for removal of the screen 95maybe had through a door 97, see Figure 13, in one of the side walls 68.A portion of the vertical wall of thisreceptacle is thus screened toincrease the draining area. It will be understoodthat charge droppedfrom the extraction chamber will fall upon the screened portion and thecoffee solution will drain into a dispensi'ng receptacle indicated at100. If desired, a gauze fabric may be arranged to receive and re-strainthe solution and again strain it. This second strainer may be supportedeither by the chute 106 or by the receptacle 100.

The drain receptacle is supported to move to a dumping position and thissupport in this instance comprises two pairs of parallel links 101 anair at each side see Fi ures 3 l and 8. One end of each link is con--nected'asat 102, see Figures 1 and i, to the drain receptacle and theother as atl03, to a corresponding wall 68. The connection is such thatthe drain receptacle is always supported in a vertical posit-ion duringmovement, or at rest in either of its adjusted The hinged or movablebottom of the drain receptacle is supported in closed position. by meansindicated at 105. The arangement is such that the bottom slides ion uponthe element 105. Moreover, the ar: rangeinent is such that as thereceptacle moves from this charge receiving position the bottom isreleased and falls by gravity to deliver the drained grounds to a pointoutside the machine. This release takes place the receptacle moves'todumping position. The dumping position is shown in Figure 3, wl'iere itwillbe also notedthat when in this position hot water plays upon thebottom screen to remove the coffee grounds. In order that the liquid mayonly be delivered to the dispensing chamber a spout 106 provided whichhas a vertical partitioning portion 107, the top edge of whichlies justbeneath the swinging bottom, see Figurel. It will. be-noted that thescreen 94 of the swinging bottom lies vertically above the spout 106 andentirely on that side, so that no liquid can be delivered on the lefthand side of the partition 107. In dumping, the receptacle is moved tothe left, and at the limit of movement the door is disposed as shown inFigure 3, at the left of the partition 107, so that it empties into achute- 109 leading to a point below and outside of the main casing 1. A.suitable pan can be provided for receiving the grounds. Such a pan hasnot been shown. It is a feature of this invention to automaticallydeliver the grounds at a point visible to the operator so that undueaccumulation may not be allowed to take place and so that suchaccumulation is prevented within the machine. The spout 106 deliversinto the coffee dispensing chamber 100 which is pro vided with anypreferred form of cock 111, the entrance to the cock being guarded byscreen 112. This receptacle 100 may be removed. Itsbottom rests upon theshelf-like bottom portion 113 of the casing 1, and its accidentaloutward movement is prevented by engagement of its upper edge 11 1 withthe under surface of the slanting portion 115 of the spout 106. Indisposing the dispensing receptacle in the position shown, the upper endis first introduced beneath the spout 106 and then the lower end isswung inwardly to the position shown. It will be seen that the lowerportion of the door 10 also overlaps the upper outer wall of thereceptacle 100 to further assist in securing it in operative position.

Means is provided and is connected to operate the valves and the drainreceptacle to move them in timed relation respectively to close themeasuring chamber valve, bring the drain chamber to charge-receivingposition, open the hopper and extraction chamber valves and then cause adwell of these elements in a respective position for a predeterminedtime. and afterwards close the extraction chamber and hopper valves.open the m'easur'ing chamber valve, open the hot water valve; move thedrain receptacle to timed period.

'tatinp upon a suitable shaft andsecured to a larger gear 122. Thislarge gear meshes with a small gear 123 which is secured to a shaftrotatably supported at its lower end in the plate and its upper end inthe plate 38. At the upper end of this shaft 12a is a worm gear125nieshing'; with a companion worm 126 of a motor shaft 129 The trainof gears are convenient means for driving the cam gear 120. The cam'gear is provided on each face, upper and lower, with an irregular camgroove. The grooves are so related as to obtain independent rotativemovements of each of a' pair of shafts. The arrangement of these shaftsis most clearly shown in Figure They are coupled with correspendingshafts carried by the removable frame or casing which supports theextraction chamber and" drain receptacle. Shaft 130 issuitablyjourn'al'ed and is connected by clutch 131 with shaft 132. .Shaft 133 issuitably journaled and connected clutch 134- with shaft 135. Both shafts130 and 133 are short shafts and may be considered stub shafts. Theclutch connection is such that when the clutches assume the positionshown in Figure 4c, the supporting casing for the extraction chamber anddrain receptacle can be removed asbefore mentioned. Therefore,, when itis desired to remove this casing the clutches are arranged as shown inFigure 4'; This can be conveniently accomplished in amanner to bedescribed. The shaft 1'30 carries sector 136 which is in mesh with arack 137 carried the measuring chamber slide or valve 65. The shaft 132,which is an extension of shaft 130, has an arm 137 having a slot and pinconnection, see Figure 8, with link 1138 pivoted t'o'the' drainreceptacle 92. The link connection is for the purpose of providing lostmotion so that the translative movement of the drain receptacle is lessthan the swing ing' movement of the sector 136, or arm 137. This methodprevents engagement of the re ceptacle with the shaft 132 when theree'eptacle 93 is brought to a position shown in Figure 3;

The shaft 133 has a sector 1450 meshing with a rack 142 ofthe slide orvalve 64:. The shaft 135 as a continuation of the shafty133, has asector 1 13 in mesh with a raclcMt-wof the slide or valve The shaft 130has an arm 150 at its upper end which has a projection 151 engaged withthe lower groove 152 ofthe cam gear. The shaft 133 has an arm 153 whichhas a projection 15 engaged in the groove 155 on the upper side of thecam gear. The gear is, in this instance, rotated in direction of thearrow and its position in Figure 9 corresponds to the position of thevalves and drain receptacle shown in Figure 1 in which valve 80 has justbeen opened, and the drainingperiod just begun.

Beginning withthe cam gear in the position shown in Figure 9, itwill beseen that if it moves in a counter-clockwisc direction, the upper groove155 and the lower groove 152 will hold their respective levers in thesame position that they now occupy, in this instancefor about ninetyseconds which is the draining period. Next, the portion 158 of the uppercam engages and moves the lever 153 in counter-clockwise direction tofirstcause the shafts 133 135 to close their valves or in other words,close the hopper yalve 6 1 and the extraction chamber valve 80.Substantially immediately after closure of these valves, cam 165 raiseslever 36, and opens valve 33, to supply boiling water. It will beunderstood that the valve 33 will remain open for a period sufficient tosupply.

the proper amount of boiling water. The arrangement is such that thewater valve is open for a fraction of the extraction period,

. the dumping receptacle cleaned.

and at the beginning of that period and after delivering of the charge.Therefore, it'is only during a portion of the time that the levers areheld motionless by grooves 161-162 thatthe water is delivered. Thereason for this step is that the water must remain in contact with thecoffee fora sufficient length of time to obtain the proper extraction.Closely following the above operations, portion 159 of the lower groovenow throws its arm 150 outwardly to cause shafts 130-132 to rotate andopen themeasuring chamber valve 65, and draw the drain receptacle todumping position. Portion 162 of the upper groove and portion 161 of thelower groove now act, over a period of about ninety seconds, to hold theelements in their position during which extraction takes place, thegrounds are dumped and the screens of i At the end of this ninety secondperiod the portion 162 of the lower groove draws its arm inwardly,rotates shafts 130-132 to closethe measuring valve 6 1 and bringthedrain chamber to receiving position. As the movement ofthe gearcontinuesarm 153 is thrown inclockwise direction to operate shafts 133-135 andbring the parts again to the position shown in Figure 1.

The sequence of valve opening and closing may be and preferably is asfollows: Close measuring chamber valve; open hopper valve to deposit acharge in the measuring chamber; bring drainwreceptacle to receivingposition (any time after dumping period and before opening of theextraction chamber valve) open extraction chamber valve; cause elementsto dwell in their respective positions for sutlicient time to allowdraining of the coffee solution. In the next-cycle. Close extractionchamber valve (any time after dumping and before the next opening of themeasuring chamber valve) close hopper'valve;.open measuring chambervalve;

supply water-during a fraction of the period in which the charge is heldin the extraction chamber and at the beginning of that period afterdelivery of thecharge; bring drain to dumping position; allow elementsto dwell in their respective positions for a period suili cient'toobtain proper extraction or solution of the coif'ee in hot or boilingwater or solvent. i

Means is provided forstopping operation of the coffee making mechanismwhen the dispensing receptacle is full. This means includes a float 170,seeFigure Q, supported by a link 171 in turn pivoted as at 172 toamercury switch 173 pivoted as at 17 4 to rock. See also Figure 9.Thefloat 170 is adjustably attached to the element 171, and for thispurpose has an extension 175 connected to slide againstthe lower portionof the link 17 1. By this arrangement the floatcan be raised to theposition shown in dotted lines n Figure 2 to permit removal ofthedispensmg receptacle 100. The mercury switch is for the purpose ofcontrolling the electrical circuit which operates the motor 91, and isconnected in a shunt circuit to permit operation ofthe motor at alltimes, when the dispensing receptacle 100 is not full. The float, whenit reaches its upper limit, causes tippingof the switch and the mercurymoves to the opposite end and contact is broken. Pivotally mounted uponthe plate 38 is a second mercury switch180. This switch is mounted upona plate 181 which is pivoted as at 182 to the plate 38. extension 183.:This extension is engageable by a projection 18 1, see Figure 9,carried by the cam gear. the extension 183, the mercury switch is tippedto and held in the position shown in dotted lines in Figure 12, and thecircuit to the motor is broken. the support of the mercury switcheswithin the circuit is shown in Figure 9. Asuitable snap switch is shownat 185. Current from the switc'hconnects through wire 186 with onesideof the motor and the other side of the motor is connectedrby wire-187both with minals of both switches 17 3 and 180. When WVhen thisextension engages The arrangement of The mounting has an be'assumed that"the float is'now about to cause a tipping motion of the switch 172since thediquid'has :risen and'ris now acting on the fioat'for Tthispurpose; It will-be noted that the connectionhwith the switch limits itsdownward Imovementpat substantially the position shown" in:ctullfllines. When vcoffee is' tv'ithdrafw'nfrom (thereceptacle100,.the float drops," switch 1173 again assumes the positionof J-Fzigu're i9, and the motor starts.

- -In'Figfure 1 1, a modified vformof valvehas been shown. In thisinstance, theeXtraction oharnber'rh'as a chute-like bottom 190, thelower surface of which forms seat for a ital-veer closurewelement 191,pivoted as at 192 to swing downwardlvias shown in dotted lines.-'l-.hexswingable element 191-isrheltl in closed position-by means-0f aslide'l'93 having a roller 194 .engageable with the under surface: orthe valve 191. The element 193-is pivotally connectedas .at-1195'Ito an7 arm 1.96 carried by shaft-135. A'modific'ation of the stirringapparatus is also shown. In this instance the-'vertical shaft 19?extends above the extraction'chamber, and is connected .by beveledgearing .198 with shaft 199 which shaft, in turn, is connected bygearing 200 :to shaft 201, in turn connected by gearing 202 withithemotor 491.

By reference to 'Figure 1, it will be seen thatthe agitator v(SB-has anarmQQi; conF- nected Eloy link 20.4 with the gear "segment 136. See alsoFigure 5. Thus :-the agitator is' operated, 61 each mo-vementof'theivalve.v

A'fabric straineris shown atx206in Fig ure 1, so arranged that theliquid coffee passes therethron'gh after passage through the screen9401? the .drainichamber. This screen has one end detachably secured asat having a discharge vcontrol' 'vallve, an ex tractionuchambr arrangedto receive"a charge released :from the measuring chamber weaves andhaving a valve ,to control discharge therefrom, means for delivering hotwater within the extraction chamber including valve, a drain receptaclearranged to receive a charge delivered-from the extraction chamber andhaving a pivoted perforated bottom as a drain, said drain receptaclebeing supported to move to a dumpingposition, means for holding thebottom in closed position when the drain receptacle is incharge-receiving position, and arranged to release the bottom as thereceptacle moves to dumping'position, and means connected to operate:the valves and drain receptacle in timed relation to close themeasuring chamber valve, bring the drain chamber to charge-receivingvposition, open the'hopper and. extraction chamber valves and then causea: dwell of these elements in respective positions for a predeterminedtime, and afterwards close the extractionschamber and hopper valves,open the measuring chamber valve, open the hot water valve, move thedrain receptacle to dumping position, and then'cause a dwell of theseelements for a timed period, the arrangement being such that the timingmechanism opens the water valve for a fraction of the period in whichthe charge is held-in the extraction chamber and at the beginning ofthat period and after delivery of the charge.

2. An apparatus for making cofle comprising a ground cofl'eesupply-hopper having a valve for controlling discharge therefrom, acharge-measuring chamber arranged to receive dry coffee from the hopperand having a'discharge control valve, an extraction chamber-arrangedtoreceive a charge released from the measuring chamber and having a valveto control discharge therefrom,-1 neans-for delivering hot water withinthe extraction chamber including a valve, a drain receptacle arranged toreceive a charge delivered from-the extraction chamber and havingaswingable element-as aldrain, saiddrain receptacle being supported tomove to a dumpingpositiom'means for holdingthe swingable element in"closed position when the drain receptacle is in charge-receivingposition, and arranged to release it as the receptacle tmoves to dumpingposition, and means connected to operate the valves and drain receptaclein' timed relation to close the measuring chaniihe'r valve, bring thedrain chamber to charge receiving position, open the hopper andextraction chamber valves and then cause adwcll of these elements inrespectivepositions for a predetermined time, and afterwards close thees:- traction chamber and hopper valves, open the measuringchamber'valve, open the hot water valve, move the drain receptacle todumping position, and then cause" a dwell of these elements for a timedperiod, the arrangement being such that the timing mechanism opens theWater valve for a fraction ol the period in which the charge is held inthe extraction chamber and at the beginning of that period andatterdolivery oi: the charge. i i I 3. An apparatus for making coffeeconiprisa valve for controlling discharge therefrom,

a charge-measuring chamber arranged to rccelve dry coffee from thehopper and having a discharge control valve, an extraction chamberarranged to receive a charge re leased from the measuring chamber andhaving a valve to control discharge tl'iere'trom,

means for delivering hot Water within thev a predetermined time, andafterwards close the extraction chamber and hopper valves, open themeasuring chamber valve, open the hot water valve, and then cause adwell of respective elements for timed periods.

4. An apparatus for makingcotfee comprising a. groundcofi'ee supplyhopper, a charge measuring chamber arranged torec'eive dry;

coffee from the hopper, an extraction chamber arranged to receive acharge released from the measuring chamber, means for de livering hotwater Within the extraction chamber, a drainreceptacle arranged to receive a charge delivered from the extraction chamber, and adapted todump and supported tomove to a dumping position, and means includingvalves to cause a charge of dry coffee to be-delivered into theextraction chamber along With hot Water, and to hold the Water and codesin contact for a predetermined length of time, and then to release thecharge into the drain receptacle, and afterwards to move the drainreceptacle to dumping position and cause the same to dwell in thatposition for a predetermined time. I

5. An apparatus for making coffee com prising a support, upon Which aremounted, a ground-coilee supply device, a charge measuring devicearranged to receive dry cotfee from the supply device, an extractiondevice arranged to receive a charge released by the measuring device,means for delivering hot water to coffee Within the extraction device, adrain device arranged to receive a charge delivered from the extractiondevice, said extraction and drain devices having a common mountingdetachably secured to the support, and means for operating the mechanismto measure a charge of coffee and deliver it to the extraction device,to introing aground coi'lee supply hopper having duce a charge of Waterafter deposit of the charge of coffee in the extraction chamber, tocause the coffee and Water to remain to-, gether tor a predeterminedlength of time, to release the charge and causeit to be delivered to thedrain receptacle, and to cause the drain receptacle; to drainpredetermined time then move to dumping position, a portion of saidmechanism being mounted upon. the common mounting.

(3. An apliiaratus for making coffee comprising a support upon Which aremounted, a ground coliee supply device, a chargemeasuring devicearranged to receive dry coffee from the supply device, an extractiondevice arrangcd to receive a charge released from the measuring device,means for delivering hot water to coffee ithin. the extraction device, adrain "device arranged to receive a charge delivered from the extractiondevice, said extraction and drain devices having a common mountingdetachabiy secured to the support, and means "for operating themechanism to make coffee, and CllSPOSQ of made coffee and grounds, aportion of said. mechanism being mounted upo the common mounting. j

71A coflee makingapparatus comprising a casing upon which is supported acoffee making mechanism including'a motor, motor circuit and switch forthe circuit, a coffee reservoir removably arranged upon the support, a.float Within the reservoir, a link operatively connected to the switch,connections between the link and float permitting the float to be movedoutof the" reservoir independently oi movementof link and there tore\vithout operation of the switch, the

connection being such that When the float IS in operativeposition, andis moved by the liquid, the switch is moved to another circuit controlposition. i

8. .A device of the class described including a casing, a supportdetachably secured to the casing, a coffee making apparatus in partsupported upon the casing and in part mounted upon the support, thatpart upon the support including an extraction chamher, and a drainchamber below said extraction chamber and arranged tomove from be neathsaid chamber to a dumping position and adapted to dump, mechanism uponthe support for operating the coll ee making mechanism, means upon thecasing for delivering Water and coffee into the extraction chamber, andmechanism for operating the delivering means in synchronism with thecoffee making means, the mechanism of the support being detachablyconnected with the last mentioned meansto permit removal of the support.I

9. A device of the class described includ-v ing a casing having anupright door, a support detachably secured to the casing to be removedthrough the door, a coffee making lit) i apparatus in part supportedupon the easing and in part mounted upon the support, that part upon thesupport including an ex traction chamber, and a drain chamber below saidextraction chamber arranged to move from beneath said chamber to adumping position and adapted to dump, mechanism upon the support foroperating the coffee making mechanism, means upon the casingfordelivering Water and coffee into the extraction chamber, andmechanism for operating the delivering means in synchronism With thecoffee making means, the mechanism of the support being detachablyconnected With the last mentioned means to permit removal of thesupport.

10. A device of the class described including a casing having aremovable cover, a shelf Within the casing bridged by the cover, andhaving an opening in the top,a hopper extending through the opening andithin the cover, and detachably resting upon the cover, a second hopperarranged in the shelf to receive material from the first hopper, and acoffee making mechanism arranged Within the casing and aligned toreceive material delivered by the hoppers 11. A device of the classdescribed including a casing having a' removable cover, ashelf Withinthe casing bridged by the cover, and having an opening in the top, ahopper extending through the opening and Within the cover, anddetachably'r'esting upon the cover, a second hopper arranged in theshelf to receive material from thefirst hopper, a coffee makingmechanism arranged ithin the casing and aligned torecei've materialdelivered by the hoppers, and mechani m mounted upon the shelf andconnected vto operate the coffee making mechanism, the said coveringhaving an opening permitting access to mechanism at a point laterally ofthe hopper.

12. A device of the class described comprising a structure providinganextraction chamber, a valve for controlling exit there from, a drainchamber arrangedto receive a charge released from the extractionchamber, means for closing the extraction chamber valve, means fordelivering a measured charge of coffee and hot Water into the chamber,holding the charge in the chamber a predetermined length of time,releasing the charge to be received by the drain chamber, and allowingthe released charge to remain in the drain chamber a predeterminedlength of time.

13. A device of the class described comprising a structure providing, anextraction chamber, a valve for controlling exit therefrom, a drainchamber arranged to receive a charge released from the extractionchamber, and means for closing the extraction chamber valve, means fordelivering a measured charge of cofiee and hot Water into theohamberfholding the charge in the chamber a predetermined length oftime, releasing the charge to be received by the drain chamber, allowingthe released charge to remain in the drain chamber a predeterminedlength of time, said mechanism including a support removably attached tothe structure, and upon which support said extraction chamber and drainchamber are carried.

In Witness whereof, I have hereunto set my hand this 16th day ofDecember, 1927.

BRUCE CANRIGHT.

